I did, I just didn’t note you were quoting pkl not me!
KISS Ballistics!
- Thread starter captdavid
- Start date
kennyc
Well-Known Member
Not really the larger objective allows more magnification at a given light level, at the cost of a larger heavier scope, you pays yer money and takes yer chances
kennyc
Well-Known Member
Not the original question though,
Light travels in straight lines, more straight lines can fit in a 56 mm lens than a 32 mm......
kennyc
Well-Known Member
they are going to be bent straight lines by the time they have got through the bell, and into the bottleneck of the tube, let alone what the lens's are going to do to them
you just want to refer to the size of your man parts don't you ? 
Apparently doubling the size of the objective lens quadruples the light gathering and a 50 mm lens around 55% more than a 40 mm.
So an 8x56 puts more light through the same 7 mm exit pupil as the 6x42 equivalent...... which would make the 8x56 brighter
also means PKL’s 8x32 Zeus’s ain’t going to outperform the 8x56 equivalent in low light
kenbro
Well-Known Member
I think a lot over here set their rifle/sight combo to shoot around 1 inch high @ 100 yds. when after deer.This was mainly a slight 'knock' to those who try to adjust for windage and bullet drop at 200yds, when the gun is sighted for 100yds, not so much light gathering. capt david
Ken.
kenbro
Well-Known Member
Can’t speak for others on this, but for me, most shots (95%) are less than 175 yards, I. occasionally get one further.
So for me I’d rather set the sights to suit the majority of shots and hold a bit higher if longer. I always use a laser ranger on longer shots. I find it quite easy to estimate a little bit higher up the body of a deer at any range I shoot at.
Longest shot on deer for me was 190 yards and that (For me) was plenty long enough.
Can see your point though.
Regards,Ken.
Sure do! It’s got to be under 100yds at that time, but plenty roe bucks and red hinds have fallen within minutes of last few legal minutes. Don’t think I’ve ever wished for a bigger lens or a red dot in those cases.
kennyc
Well-Known Member
the quality of glass will make more difference than size, and larger means more weight and bulk, and narrower field of view, so..... the only way to test the theory would be for the two of you to have a show and tell
Apparently doubling the size of the objective lens quadruples the light gathering and a 50 mm lens around 55% more than a 40 mm.
So an 8x56 puts more light through the same 7 mm exit pupil as the 6x42 equivalent...... which would make the 8x56 brighter
BTW the 8x56 was brought in to allow more magnification, whilst retaining the same output pupil as the 6x42 which was brought in to give more magnification than the 4X whilst retaining the output pupil
Roe in Scottish Borders, reds in Argyll
Heym SR20
Well-Known Member
I have two Swarovski scopes - an older 3-9x36 Nova and a newer 4-12x50 AV. I have good eyes and really cannot detect any difference between them in terms of shooting a deer at last light. I like to keep them at 4 or 6x. The bigger is a little brighter if I wind it up to 12x, but at last light you want as wide a field of view as possible and want to keep the deer in vision even after the shot.
Impressive, I was down in Devon stalking reds the weekend before last and by 45 minutes past legal sunset it was too dark to see where you were going without a torch let alone see deer with a Zeiss scope, I did try as they were there!!
If your 4x36 can see in that level of light at 80-100 yards that’s impressive and I may have to change!
the quality of glass will make more difference than size, and larger means more weight and bulk, and narrower field of view, so..... the only way to test the theory would be for the two of you to have a show and tell
BTW the 8x56 was brought in to allow more magnification, whilst retaining the same output pupil as the 6x42 which was brought in to give more magnification than the 4X whilst retaining the output pupil
10x72 next then......
A shoe and tell in Devon, where it gets dark quicker.... both scopes are Zeiss of similar vintage so should be on a par glass wise....
kennyc
Well-Known Member
you say that like someone hasn't already tried it
still going to have height,length and weight issues and will add field of view restriction and depth of field issues to that
and all for the same light transmission (assuming all other things are even)
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